CN102089525A - Compressor having output adjustment assembly including piston actuation - Google Patents

Compressor having output adjustment assembly including piston actuation Download PDF

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Publication number
CN102089525A
CN102089525A CN200980126965.2A CN200980126965A CN102089525A CN 102089525 A CN102089525 A CN 102089525A CN 200980126965 A CN200980126965 A CN 200980126965A CN 102089525 A CN102089525 A CN 102089525A
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China
Prior art keywords
compressor
chamber
piston
communicated
pressure
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Granted
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CN200980126965.2A
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Chinese (zh)
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CN102089525B (en
Inventor
罗贝特·C·斯托弗
马桑·阿凯
迈克尔·M·佩列沃兹奇科夫
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Copeland LP
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Emerson Climate Technologies Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
    • F04C28/16—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using lift valves

Abstract

A compressor may include a housing, first and second scroll members, and a compressor output adjustment assembly. The first scroll member may define a first chamber having first and second passages in communication therewith, a second chamber having third and fourth passages in communication therewith, and first and second apertures. The first and third passages may be in communication with a first pressure source and the second and fourth passages may be selectively in communication with a second pressure source. The compressor output adjustment assembly may include a first piston located in the first chamber and displaceable between first and second positions and a second piston located in the second chamber and displaceable between first and second positions. The first piston may isolate the first aperture from the first passage and the second piston may isolate the second aperture from the third passage when in their respective second positions.

Description

Compressor with the output adjusting part that comprises plunger actuation
The cross reference of related application
The application requires the U.S. Provisional Application No.61/057 of submission on May 30th, 2008,372 rights and interests.The whole disclosure of above-mentioned application is incorporated into this paper by reference.
Technical field
The present invention relates to compressor, relate more specifically to have the compressor of output adjusting part.
Background technique
This part provides the background information that relates to the disclosure of invention, and described background information must not be prior art.
Scroll compressor comprises that multiple output adjusting part is to change the operation capacity of compressor.Described output adjusting part can comprise the fluid passage, and described fluid passage extends through scroll element and is communicated with the fluid between another pressure span that compression pocket chamber and compressor optionally are provided.
Summary of the invention
This part provides the general introduction of the disclosure of invention, and this part is not the open comprehensively of its four corner or its whole features.
A kind of compressor, it can comprise housing, first scroll element, second scroll element and compressor output adjusting part.Described first scroll element can be supported in the described housing, and can comprise first end plate, the first spiral wound spare, first chamber, second chamber, first hole and second hole, the described first spiral wound spare extends from first side of described first end plate, described first chamber is arranged on second side of described first end plate, and have the first passage and the second channel that are communicated with it, described second chamber is arranged on second side of described first end plate, and have the third channel and the four-way that are communicated with it, described first hole extends through described first end plate and is communicated with described first chamber, and described second hole extends through described first end plate and is communicated with described second chamber.Described first passage and third channel can with first pressure-source communication, described second channel and four-way can be optionally and second pressure-source communication.
Described second scroll element can be supported in the described housing and can comprise second end plate, described second end plate has the second spiral wound spare, and the described second spiral wound spare meshes to form chamber, a series of cave from described second end plate extension and with the described first spiral wound spare.Described first hole can be communicated with the chamber, first cave with first pressure operation in the chamber, described cave so that being communicated with between chamber, described first cave and described first chamber to be provided, and described second hole can be communicated with the second cave chamber with second pressure operation different with chamber, described first cave in the chamber, described cave so that being communicated with between chamber, described second cave and described second chamber to be provided.
Described compressor output adjusting part can comprise the first piston and second piston.Described first piston can be arranged in described first chamber and can move between the primary importance and the second place, and described second piston can be arranged in described second chamber and can move between the primary importance and the second place.Described first piston can make when being positioned at its second place that described first hole and described first passage are isolated to be communicated with, and described second piston can make described second hole and described third channel completely cut off when being positioned at its second place to be communicated with.
When described second piston was positioned at its second place, described first piston was positioned at its second place.
Described compressor can additionally comprise valve assembly, and described valve assembly can be with the operation of first pattern and second pattern, and with described second pressure source and described second and four-way be communicated with.Described valve assembly can in the process of described first operator scheme, provide described second and four-way and described second pressure source between be communicated with.Described valve assembly can with the swabbing pressure regional connectivity of compressor, and can provide described second and four-way and described swabbing pressure zone between be communicated with, and can in the process of described second operator scheme, make described second and four-way be communicated with described second pressure source is isolated.Described second pressure source can comprise the discharge pressure zone of compressor.Described first scroll element can comprise and the discharge passage of described discharge pressure regional connectivity and the five-way road that is communicated with described discharge passage and described valve assembly.When described second channel and described second pressure-source communication, described first piston can be positioned at its second place.When described four-way and described second pressure-source communication, described second piston can be positioned at its second place.When described second channel and the isolation of described second pressure source, described first piston can be positioned at its primary importance.When the swabbing pressure regional connectivity of described second channel and described compressor, described first piston can be positioned at its primary importance.
Described compressor can also comprise floating seal, and described floating seal engages to form the 3rd chamber with described first scroll element.Described first and second chambers can axially be arranged between described the 3rd chamber and the chamber, described cave.Described the 3rd chamber can be communicated with described first and second chambers are isolated.
In described first and second pressure each can be the intermediate pressure between the operation pressure of the operation pressure in the swabbing pressure zone of described compressor and described second pressure source.Described first and second chambers can be spaced apart from each other rotationally.Described compressor output adjusting part comprises first biasing member and second biasing member, described first biasing member engages with described first piston so that described first piston is biased to its primary importance, and described second biasing member engages so that described second piston is biased to its primary importance with described second piston.When described first piston is positioned at its primary importance and described second piston and is positioned at its primary importance, described first and second holes can with the swabbing pressure regional connectivity of described compressor.
Described compressor output adjusting part can comprise the steam injection system that is communicated with described first and third channel.When described first piston was positioned at its primary importance and described second piston and is positioned at its primary importance, described steam injection system can be communicated with described first and second holes.Described first piston can move axially between its first and second position, and described second piston can move axially between its first and second position.
The others of applicability will become clearer by description provided herein.That description in this summary and concrete example are used for illustrative purpose but not be used for intending restriction scope disclosed by the invention.
Description of drawings
Accompanying drawing described below only for example purposes but not be used for limiting by any way the scope of the disclosure of invention.
Fig. 1 is the sectional view according to the compressor of the disclosure of invention;
Fig. 2 is the planimetric map of deciding scroll element of compressor shown in Figure 1;
Fig. 3 is first sectional view of deciding scroll element and compressor output adjusting part of compressor shown in Figure 1;
Fig. 4 is second sectional view of deciding scroll element and compressor output adjusting part shown in Figure 3;
Fig. 5 is a perspective view of deciding scroll element and compressor output adjusting part shown in Figure 3;
Fig. 6 is the 3rd sectional view of deciding scroll element and compressor output adjusting part shown in Figure 3;
Fig. 7 is the 4th sectional view of deciding scroll element and compressor output adjusting part shown in Figure 3;
Fig. 8 is the perspective view of optionally deciding scroll element and compressor output adjusting part according to the disclosure of invention;
Fig. 9 is first sectional view of deciding scroll element and compressor output adjusting part shown in Figure 8;
Figure 10 is second sectional view of deciding scroll element and compressor output adjusting part shown in Figure 8;
Figure 11 is the 3rd sectional view of deciding scroll element and compressor output adjusting part shown in Figure 8;
Figure 12 is the 4th sectional view of deciding scroll element and compressor output adjusting part shown in Figure 8;
Figure 13 is the 5th sectional view of deciding scroll element and compressor output adjusting part shown in Figure 8;
Figure 14 is the 6th sectional view of deciding scroll element and compressor output adjusting part shown in Figure 8;
Figure 15 is a planimetric map of deciding scroll element shown in Figure 8;
Figure 16 is the schematic representation according to first vortex orientation of disclosure of the present invention;
Figure 17 is the schematic representation according to second vortex orientation of disclosure of the present invention;
Figure 18 is the schematic representation according to the 3rd vortex orientation of disclosure of the present invention;
Figure 19 is the schematic representation according to the 4th vortex orientation of disclosure of the present invention;
Figure 20 is first sectional view of optionally deciding scroll element and compressor output adjusting part according to disclosure of the present invention; And
Figure 21 is second sectional view of deciding scroll element and compressor output adjusting part shown in Figure 20.
Embodiment
Following description is in essence only for exemplary but not be used to limit open, application of the present invention or use.Should be appreciated that corresponding reference number similar or corresponding parts of indication and feature in institute's drawings attached.
Instruction of the present invention is suitable for being combined in many dissimilar scroll compressors and the rotor compressor (comprising impervious machine, open drive motor and non-tight type motor).The purpose of property presented for purpose of illustration, compressor 10 is depicted as low-side fully-closed vortex refrigeration compressor, and promptly in this fully-closed vortex refrigeration compressor, by air-breathing cooling, vertical cross-section picture in picture as illustrated in fig. 1 shows in capsul for motor and compressor.
With reference to Fig. 1, compressor 10 can comprise capsul assembly 12, main bearing housing assembly 14, motor sub-assembly 16, compressing mechanism 18, black box 20, refrigeration agent outlet fitting 22, bleed valve assembly 24, air-breathing accessory 26 and the adjusting part 27 of entering.Shell component 12 can hold main bearing housing assembly 14, motor sub-assembly 16 and compressing mechanism 18.
Shell component 12 can form compressor housing usually, and can comprise cylindrical housings 28, the separating part 32 of the end cap 30 located in the top, horizontal expansion and at the base portion 34 of its lower end.End cap 30 and separating part 32 can limit discharge chamber 36 substantially.Discharge chamber 36 can be formed for the vent silencer of compressor 10 substantially.Refrigeration agent outlet fitting 22 can be attached to shell component 12 at 38 places of the opening in the end cap 30.Bleed valve assembly 24 can be arranged in the outlet fitting 22, and can prevent the adverse current situation substantially.The air-breathing accessory 26 that enters can be attached to shell component 12 at opening 40 places.Separating part 32 can comprise discharge passage 46, is communicated with providing between compressing mechanism 18 and the discharge chamber 36 by described discharge passage 46.
Main bearing housing assembly 14 can be sentenced any required mode (such as riveted joint) at a plurality of points and attach on the housing 28.Main bearing housing assembly 14 can comprise main bearing shell 52, arrange within it clutch shaft bearing 54, lining 55 and fastening piece 57.Main bearing shell 52 can comprise the central body portion 56 with a series of arms 58, and described arm 58 extends radially outwardly from described central body portion 56.Central body portion 56 can comprise first portion 60 and second portion 62, and described first portion 60 and second portion 62 have the opening 64 that runs through it.Second portion 62 can hold clutch shaft bearing 54 within it.First portion 60 can limit the smooth thrust bearing surface 66 of annular on its axial end.Arm 58 can comprise hole 70, and described hole 70 is run through described arm 58 extensions and held fastening piece 57.
Motor sub-assembly 16 can comprise motor stator 76, rotor 78 and live axle 80 substantially.Winding 82 can pass stator 76.Motor stator 76 can press-fit and fits in the housing 28.Live axle 80 can be driven rotationally by rotor 78.Rotor 78 can press-fit and fits on the live axle 80.Live axle 80 can comprise eccentric crank pin 84, and described eccentric crank pin 84 has par 86 thereon.
Compressing mechanism 18 can comprise moving scroll element 104 substantially and decide scroll element 106.Moving scroll element 104 can comprise end plate 108, and described end plate 108 has the smooth directed thrust directed thrust surfaces 112 of lip-deep spiral vane or rolling piece 110 and the annular on lower surface thereon.Directed thrust directed thrust surfaces 112 can connect with smooth thrust bearing surface 66 faces of annular on the main bearing shell 52.Cylindrical hub 114 can be protruded downwards from directed thrust directed thrust surfaces 112, and can have the driving lining of arranging rotationally within it 116.Drive lining 116 and can comprise endoporus, crank pin 84 can be arranged in this endoporus drivingly.The par 86 of crank pin can be bonded on the interior plat surface of a part of the endoporus of propeller shaft sleeve 116 drivingly, so that radially adaptive driving structure to be provided.Sliding cross coupling (Oldham coupling) 117 can and be decided scroll element 106 with moving scroll element 104 and engage to prevent relatively rotating between the two.
Refer again to Fig. 2-5 in addition, decide scroll element 106 and can comprise end plate 118, described end plate 118 has the spiral wound spare 120 on its lower surface, the discharge passage 119 that extends through described end plate 118 and a series of lip part that extends radially outwardly 121.Spiral wound spare 120 can form the engagement with the rolling piece 110 of moving scroll element 104, thereby forms chamber, a series of cave.As hereinafter discussing, the chamber, cave that is formed by spiral wound spare 110,120 can change in the whole press cycles of compressing mechanism 18.
End plate 118 comprises annular notch 134 in the surface thereon, and described annular notch 134 is limited by parallel coaxial madial wall 136 and outer side wall 138.Madial wall 136 can form discharge passage 139.End plate 118 can also comprise the first and second discrete recesses 140,142.First recess 140 and second recess 142 can be arranged in the annular notch 134.Plunger 144,146 can be fixed on the end plate 118 at first recess 140 and place, second recess, 142 tops, to form first chamber 145 and second chamber 147 of isolating with annular notch 134.Hole 148 (see figure 2)s can extend through end plate 118, thus provide in the chamber, cave one with annular notch 134 between be communicated with.
First passage 150 can radially extend through end plate 118 to the outer surface of deciding scroll element 106 from first portion's 152 (see figure 4)s of first chamber 145, and second channel 154 (see figure 6)s can radially extend through end plate 118 to the outer surface of deciding scroll element 106 from the second portion 156 of first chamber 145.Third channel 158 can radially extend through end plate 118 to the outer surface of deciding scroll element 106 from the first portion 160 of second chamber 147, four-way 162 can radially extend through end plate 118 to the outer surface of deciding scroll element 106 from the second portion 164 of second chamber 147.First passage 150 and third channel 158 can with the swabbing pressure regional connectivity of compressor 10.Five-way road 166 (Fig. 7) can radially extend through end plate 118 to the outer surface of deciding scroll element 106 from the discharge pressure zone of compressor 10.For example, five-way road 166 can extend to the outer surface of deciding scroll element 106 from discharge passage 139.As hereinafter discussing, second channel 154, four-way 162 and five-way road 166 can be communicated with adjusting part 27.
First group of port one 68,170 can extend through end plate 118, and can be communicated with the chamber, cave with the intermediate pressure operation.Port one 68 can extend in the first portion 152 of first chamber 145, and port one 70 can extend in the first portion 160 of second chamber 147.Another group port one 72,174 can extend through end plate 118, and can be communicated with the other chamber, cave with the intermediate pressure operation.Port one 72 can extend in first chamber 145, and port one 74 can extend in second chamber 147.In the operating process of compressor, port one 68 can be arranged on being arranged to from the starting point (A) of rolling piece 120 radially inwardly at least 180 ° the chamber, a cave in the chamber, described cave, and port one 70 can be arranged on to be arranged to from the starting point (A) of rolling piece 120 radially inwardly at least 360 ° the chamber, a cave in the chamber, described cave.Port one 68 can radially inwardly be provided with respect to port one 72, and port one 70 can radially inwardly be provided with respect to port one 74.Port one 68,170 can limit the pondage of compressing mechanism 18 substantially.Port one 72,174 can form auxiliary port, is used for the time preventing in the swabbing pressure zone that port one 68,170,172 and 174 is exposed to compressor 10 compression in the chamber, port one 68,170 radially outer cave.
Black box 20 can comprise the floating seal that is arranged in the annular notch 134.Black box 20 can and be decided scroll element 106 with respect to shell component 12 and move axially, decide moving axially of scroll element 106 to provide, the sealing engagement of maintenance and separating part 32 is so that the discharge pressure of compressor 10 is regional and the swabbing pressure zone is isolated from each other simultaneously.Pressure in the annular notch 134 that is provided by hole 148 can order about black box 20 and engage with separating part 32 in the operating process of normal compressor.
Adjusting part 27 can comprise valve assembly 176 and the first piston assembly 178 and second piston assembly 180.Valve assembly 176 can comprise solenoid valve, and described solenoid valve has housing 182, and described housing 182 has layout valve member 184 within it.Housing 182 can comprise first passage 186, second channel 188 and third channel 190.First passage 186 can with the swabbing pressure regional connectivity of compressor 10, second channel 188 can be communicated with second channel 154 and the four-way 162 in the end plate 118, third channel 190 can be communicated with the interior five-way road 166 of end plate 118.
Valve member 184 can move between the primary importance and the second place.At primary importance (Fig. 6), first passage 186 can communicate with each other with second channel 188 and keep apart with third channel 190, thereby makes the swabbing pressure regional connectivity of second channel 154 in the end plate 118 and four-way 162 and compressor 10.At the second place (Fig. 7), second channel 188 and third channel 190 can communicate with each other and keep apart with first passage 186, thereby make the discharge pressure regional connectivity of second channel 154 in the end plate 118 and four-way 162 and compressor 10.
First piston assembly 178 can be arranged in first chamber 145, and can comprise piston 192, Sealing 194 and biasing member 196.Second piston assembly 180 can be arranged in second chamber 147, and can comprise piston 198, Sealing 200 and biasing member 202.The first piston 192 and second piston 198 can move between the primary importance and the second place.More specifically, biasing member 196,202 can be when valve member 184 be positioned at primary importance (Fig. 6) order about first piston 192 and second piston 198 enters primary importance (Fig. 4).When valve member 184 is positioned at the second place (Fig. 7), piston 192,198 can move to the second place (Fig. 3) by the discharge pressure that is provided by second channel 154 and four-way 162.When piston 192 was positioned at the primary importance and the second place, Sealing 194 can prevent being communicated with between first passage 150 and the second channel 154.When piston 198 was positioned at the primary importance and the second place, Sealing 200 can prevent being communicated with between third channel 158 and the four-way 162.
As shown in Figure 3, when piston 192,198 was positioned at the second place, piston 192 can make port one 68,172 and 150 isolated connections of first passage, and piston 198 can make 158 isolated connections of port one 70,174 and third channel.As shown in Figure 4, when piston 192,198 is positioned at primary importance, piston 192 can move away from port one 68,172, thereby provide being communicated with between port one 68,172 and the first passage 150, piston 198 can be removed from port one 70,174, thereby being communicated with between port one 70,174 and the third channel 158 is provided.Therefore, when piston 192,198 was positioned at primary importance, port one 68,170,172,174 can be respectively and the swabbing pressure regional connectivity of compressor 10, thereby reduce the operation capacity of compressor 10.When piston 192,198 was positioned at primary importance, gas can flow to the swabbing pressure zone of compressor 10 from port one 68,170,172,174.In addition, when piston 192 was positioned at primary importance, gas can flow to port one 72 from port one 68, and when piston 198 was positioned at primary importance, gas can flow to port one 74 from port one 70.
Shown in Figure 20 and 21, in a kind of optional structure, in the output adjusting part of compressor, comprise steam injection system 700.Deciding scroll element 806 can be similar to substantially and decide scroll element 106.Therefore, the output adjusting part of deciding scroll element 806 and compressor except the difference of hereinafter pointing out because identical with above-mentioned description and no longer at length be described.
Steam injection system 700 can be communicated with first passage 850 and third channel 858, and be communicated with from the vapor source of heat exchanger that for example is communicated with or expansion tank with compressor.As shown in figure 21, when piston 892,898 is positioned at primary importance, piston 892 can move away from port 868,872, thereby provide being communicated with between port 868,872 and the first passage 850, piston 898 can be removed from port 870,874, thereby being communicated with between port 870,874 and the third channel 858 is provided.Therefore, when piston 892,898 was positioned at primary importance, port 868,870,872,874 can be respectively be communicated with vapor source from steam injection system 700, thereby increased the operation capacity of compressor 10.
With reference to Fig. 8 to 15, a kind ofly optionally decide scroll element 306 and can be incorporated in the compressor 10.Decide scroll element 306 and can comprise first member 307 and second member 309.First member 307 can use fastening piece 311 to be fixed on second member 309.First member 307 can comprise the first end plate portion 317, and comprises the annular notch 334 that is limited by parallel coaxial sidewall 336,338 in the surface thereon.Sidewall 336 can be used for discharge passage 339.The first end plate portion 317 can comprise the first and second discrete recesses 340,342 (Fig. 9 and 10) and the third and fourth discrete recess 344,346 (Figure 11 and 12).Hole 348 (shown in Figure 11 and 12) can extend through the first end plate portion 317 and enter in the annular notch 334.
Second member 309 can comprise the second end plate portion 318, discharge passage 319 and a series of lip part that extends radially outwardly 321, the described second end plate portion 318 has spiral wound spare 320 on its lower surface, described discharge passage 319 extends through the described second end plate portion 318.Spiral wound spare 320 can form engagement with the rolling piece of the moving scroll element that is similar to moving scroll element 104, thereby forms chamber, a series of cave.
The second end plate portion 318 can also comprise first and second discrete recess 341,343 (Fig. 9 and 10) and the central recess 349 (Figure 11 and 12), and described central recess 349 has the discharge passage 319 that passes it.When first member 307 and the assembling of second member 309 were decided scroll element 306 to form, first recess 340 in first member 307 and second recesses 342 can align to form first chamber 345 and second chamber 347 with first recess 341 and second recess 343 in second member 309.First chamber 345 and second chamber 347 can be kept apart with annular notch 334.Hole 351 (shown in Figure 11 and 12) can extend through the second end plate portion 318, and can be communicated with the hole 348 in first member 307, thereby be similar to the pressure-biased that is used for the pressure-biased of black box 20 discussed above substantially for the floating seal assembly provides.
First passage 350 (as shown in figure 13) can radially extend through the first end plate portion, 317 to first recesses 340 and second recess 342 from the outer surface of deciding scroll element 306.A pair of second channel 358 can radially extend through the second end plate portion 318 to the outer surface of deciding scroll element 306 from first recess 341, and a pair of third channel 362 can radially extend through the second end plate portion 318 to the outer surface of deciding scroll element 306 from second recess 343.Second channel 358 and third channel 362 can with the swabbing pressure regional connectivity.Four-way 366 (Figure 11 and 12) can radially extend through the first end plate portion 317 to the outer surface of deciding scroll element 306 from the discharge pressure zone.For example, four-way 366 can extend to the outer surface of deciding scroll element 306 from discharge passage 339.As hereinafter discussing, first passage 350 and four-way 366 can be communicated with adjusting part 227.
The second end plate portion 318 can also comprise that first regulates port 368, second and regulate port the 370, the 3rd and regulate port the 371, the 4th and regulate port the 372, the 5th and regulate port 373 and the 6th and regulate port 374, and first variable volume than (VVR) port 406 and second variable volume than (VVR) port 408.First regulates port 368, the 3rd adjusting port 371 and the 5th adjusting port 373 can be communicated with first chamber 341, and the second adjusting port 370, the 4th adjusting port 372 and the 6th are regulated port 374 and can be communicated with second chamber 343.First port 368 and second port 370 can limit the adjusting compressor capacity substantially.
Port 368,370 can be arranged on separately is arranged to starting point (A ') from rolling piece 320 radially inwardly at least 720 ° the chamber, a cave in the chamber, described cave.Port 368 can radially inwardly be provided with respect to port 371,373, and port 370 can radially inwardly be provided with respect to port 372,374.Because port 368,370 is along the bigger inside location of rolling piece 320, therefore port 371,372,373,374 can form auxiliary port separately, is used for preventing when port 368,370,371,372,373,374 is exposed to the swabbing pressure zone compression in the chamber, port 368,370 radially outer cave.
The one VVR port 406 and the 2nd VVR port 408 can radially inwardly be provided with respect to port 368,370,371,372,373,374 and with respect to hole 351.The one VVR port 406 and the 2nd VVR port 408 can with the chamber, cave that forms by rolling piece 310,320 in one be communicated with (Figure 16 to 19), and be communicated with central recess 349.Therefore, a VVR port 406 and the 2nd VVR port 408 can be communicated with discharge passage 339.
Adjusting part 227 can comprise valve assembly 376 and the first piston assembly 378 and second piston assembly 380.Valve assembly 376 can comprise solenoid valve, and described solenoid valve has housing 382, and this housing 382 has layout valve member (not shown) within it.
First piston assembly 378 can be arranged in first chamber 345, and can comprise piston 392, Sealing 394 and biasing member 396.Second piston assembly 380 can be arranged in second chamber 347, and can comprise piston 398, Sealing 400 and biasing member 402.The first piston 392 and second piston 398 can move between the primary importance and the second place.More specifically, when valve assembly 376 provided outlet for recess 340,342, biasing member 396,402 can order about first piston 392 and second piston 398 enters primary importance (Figure 10).Valve assembly 376 can optionally make recess 340,342 outlets lead to the swabbing pressure zone.In addition, valve assembly 376 can be communicated with first passage 350 and four-way 366.Valve assembly 376 can be optionally provides connection between first passage 350 and the discharge pressure zone by four-way 366.When valve assembly 376 provided connection between first passage 350 and the discharge pressure zone, the second place (Fig. 9) can be provided by the discharge pressure that is provided by first passage 350 piston 392,398.When piston 392 was positioned at the primary importance and the second place, Sealing 394 can prevent being communicated with between first passage 350 and the second channel 358.When piston 398 was positioned at the primary importance and the second place, Sealing 400 can prevent being communicated with between first passage 350 and the third channel 362.
As shown in Figure 9, when piston 392,398 was positioned at the second place, piston 392 can make port 368,371,373 and 358 isolated connections of second channel, and piston 398 can make port 370,372,374 and 362 isolated connections of third channel.As shown in figure 10, when piston 392,398 is positioned at primary importance, piston 392 can be removed from port 368,371,373, thereby provide being communicated with between port 368,371,373 and the second channel 358, piston 398 can be removed from port 370,372,374, thereby being communicated with between port 370,372,374 and the third channel 362 is provided.Therefore, when piston 392,398 was positioned at primary importance, port 368,370,371,372,373,374 can be separately and the swabbing pressure regional connectivity, thereby reduced the operation capacity of compressor.In addition, when piston 392,398 is positioned at primary importance, one or more in the port 368,370,371,372,373,374 air-flow can be provided in the port 368,370,371,372,373,374 with another of lower pressure operation.
Shown in Figure 11 and 12, VVR assembly 500 can optionally provide being communicated with between VVR port 406,408 and the discharge passage 339.VVR assembly 500 can comprise the first piston assembly 502 and second piston assembly 504.First piston assembly 502 can comprise piston 506 and biasing member 508 (such as spring).Second piston assembly 504 can comprise piston 510 and biasing member 512 (such as spring).Biasing member 508,512 can order about piston 506,510 and enter primary importance, and in described primary importance, piston 506,510 engages with the second end plate portion 318 with sealing VVR port 406,408.When the pressure from VVR port 406,408 surpasses predeterminated level, the power that is applied on the piston 506,510 by the gas in the VVR port 406,408 can surpass the power that is applied by biasing member 508,512, piston 506,510 can move to the second place, in the described second place, VVR port 406,408 is communicated with discharge passage 339.
Shown in Figure 16 to 19, a part that illustrates compression cycle is to illustrate the operation of port 368,370,371,372,373,374 and VVR port 406,408.In Figure 16, moving scroll element 304 is illustrated as and is in primary importance, defines chamber, the first pondage cave 600,602 in described primary importance and limits.Chamber, the first pondage cave 600,602 can be defined as outermost radial outside compression pocket chamber substantially, described outermost radial outside compression pocket chamber radially inwardly arranges with respect to port 368, and begins when first regulates volume in the chamber, cave 600,602 and discharge by discharge passage 319 and port 368 is kept apart from the moment that forms chamber, the first pondage cave 600,602.Therefore, the volume in the chamber, the first pondage cave 600,602 can be kept apart with port 368 in relative residual compression circuit process.The volume in chamber, the first pondage cave 600,602 can be maximum volume when moving scroll element 304 is positioned at primary importance, and can be compressed continuously up to discharging by discharge passage 319.
When moving scroll element 304 is positioned at primary importance, the spiral wound spare 310 of moving scroll element 304 can be located the outer radial face in abutting connection with spiral wound spare 320 in first location, and can be on the interior radially surface of the second location place relative substantially with first location in abutting connection with spiral wound spare 320.When moving scroll element 304 was positioned at primary importance, sense of rotation (R) the upper edge spiral wound spare 310 that port 368 can begin in first jiao of position corresponding to first location at live axle extended at least 20 °.When moving scroll element 304 was positioned at primary importance, port 368 can be by 310 sealings of spiral wound spare.When moving scroll element 304 was positioned at primary importance, the part of port 370 can be communicated with chamber, the first pondage cave 602.
In Figure 17, moving scroll element 304 is illustrated as and is in the second place, defines chamber, the second pondage cave 604,606 in the described second place.In the second place, chamber, the second pondage cave 604,606 can be defined as outermost radial outside compression pocket chamber substantially, described outermost radial outside compression pocket chamber radially inwardly is provided with respect to port 368,370, and driven scroll element 304 moment of being positioned at the second place when beginning volume up to chamber, the second pondage cave by discharge passage 319 dischargings with port 368,370 isolation.Chamber, the second pondage cave 604,606 can be corresponding to chamber, the first pondage cave 600,602 after the compression that is moved to second place generation by moving scroll element 304 from primary importance.For example, the compression from the primary importance to the second place can be corresponding to about 20 ° of drive shaft turns.
When moving scroll element 304 is positioned at the second place, the spiral wound spare 310 of moving scroll element 304 can be located the outer radial face in abutting connection with spiral wound spare 320 in the 3rd location, and can be on the interior radially surface of the four location place relative substantially with the 3rd location in abutting connection with spiral wound spare 320.When moving scroll element 304 was positioned at the second place, port 370 can begin in second jiao of position corresponding to the 4th location to extend at least 20 ° along spiral wound spare 310 on the contrary substantially with the sense of rotation (R) of live axle.When moving scroll element 304 was positioned at the second place, port 370 can be by 310 sealings of spiral wound spare.
Shown in Figure 16 and 17, each from the chamber, cave that chamber, the first and second pondage caves 600,602,604,606 is provided with radially outwardly can with port 368,370,371,372,373,374 at least one always is communicated with.
With reference to Figure 18 and 19, illustrate the VVR operation of VVR port 406,408.In Figure 18, moving scroll element 304 is illustrated as and is in the 3rd position that limits chamber, a VVR cave 608,610.Chamber, the one VVR cave 608,610 can be defined as radially chamber, inboard compression cave substantially, described radially chamber, inboard compression cave is provided with radially outwardly with respect to VVR port 406, and from moment that compression cycle begins up to chamber, a VVR cave 608,610 when forming and VVR port 406 keep apart.Therefore, chamber, a VVR cave 608,610 can be communicated with VVR port 406 in the remainder process of compression cycle.The volume in chamber, the one VVR cave 608,610 can be maximum volume when moving scroll element 304 is positioned at the 3rd position, and can be compressed continuously up to discharging by discharge passage 319.
When moving scroll element 304 is positioned at the 3rd position, the spiral wound spare 310 of moving scroll element 304 can be located the outer radial face in abutting connection with spiral wound spare 320 in the 5th location, and can be on the interior radially surface of the six location place relative substantially with the 5th location in abutting connection with spiral wound spare 320.When moving scroll element 304 was positioned at the 3rd position, sense of rotation (R) the upper edge spiral wound spare 310 that VVR port 406 can begin in the position, angle corresponding to the 5th location at live axle extended at least 20 °.
In Figure 19, moving scroll element 304 is illustrated as and is in the 4th position that limits chamber, the 2nd VVR cave 612,614.In the 4th position, chamber, the 2nd VVR cave 612,614 can be defined as radially chamber, inboard compression cave substantially, described radially chamber, inboard compression cave arranges radially outwardly with respect to VVR port 408, and from moment that compression cycle begins up to chamber, the 2nd VVR cave 612,614 when forming and VVR port 408 keep apart.Chamber, the 2nd VVR cave 612,614 can be corresponding to chamber, a VVR cave 608,610 after the compression that is moved to the generation of the 4th position by moving scroll element 304 from the 3rd position.For example, can be from the compression of four positions, the 3rd position to the corresponding to about 40 ° of drive shaft turns.When moving scroll element 304 was positioned at the 4th position, the part of VVR port 406 can be communicated with chamber, the 2nd VVR cave 612,614.
When moving scroll element 304 is positioned at the 4th position, the spiral wound spare 310 of moving scroll element 304 can be located the outer radial face in abutting connection with spiral wound spare 320 in the 7th location, and can be on the interior radially surface of the eight location place relative substantially with the 7th location in abutting connection with spiral wound spare 320.When moving scroll element 304 was positioned at the 4th position, VVR port 408 can begin at the corner location place corresponding with the 8th location extending at least 20 ° along spiral wound spare 310 on the contrary substantially with the sense of rotation (R) of live axle.
Term " first ", " second " etc. are only used in whole specification for clear, and are not used in the similar terms in the restriction claim.

Claims (20)

1. compressor, it comprises:
Housing;
First scroll element, described first scroll element is supported in the described housing, and comprise first end plate, the first spiral wound spare, first chamber, second chamber, first hole and second hole, the described first spiral wound spare extends from first side of described first end plate, described first chamber is arranged on second side of described first end plate, and have the first passage and the second channel that are communicated with it, described second chamber is arranged on described second side of described first end plate, and have the third channel and the four-way that are communicated with it, described first passage and third channel and first pressure-source communication, described second channel and four-way optionally with second pressure-source communication, described first hole extends through described first end plate and is communicated with described first chamber, and described second hole extends through described first end plate and is communicated with described second chamber;
Second scroll element, described second scroll element is supported in the described housing, and comprise second end plate, described second end plate has the second spiral wound spare, the described second spiral wound spare meshes to form a series of compression pocket chamber from described second end plate extension and with the described first spiral wound spare, described first hole is communicated with the chamber, first cave with first pressure operation in the chamber, described cave so that being communicated with between chamber, described first cave and described first chamber to be provided, in described second hole and the chamber, described cave with second pressure operation, the second cave chamber different with chamber, described first cave is communicated with so that being communicated with between chamber, described second cave and described second chamber to be provided; And
Compressor output adjusting part, described compressor output adjusting part comprises the first piston and second piston, described first piston is arranged in described first chamber and can moves between the primary importance and the second place, described second piston is arranged in described second chamber and can moves between the primary importance and the second place, described first piston makes when being positioned at its second place that described first hole and described first passage are isolated to be communicated with, and described second piston makes described second hole and described third channel completely cut off when being positioned at its second place to be communicated with.
2. compressor as claimed in claim 1, wherein, when described second piston was positioned at its second place, described first piston was positioned at its second place.
3. compressor as claimed in claim 1, also comprise valve assembly, described valve assembly can be with first pattern and the operation of second pattern, and can operate with described second pressure source and described second and four-way be communicated with, described valve assembly in the process of described first operator scheme, provide described second and four-way and described second pressure source between be communicated with.
4. compressor as claimed in claim 3, wherein, the swabbing pressure regional connectivity of described valve assembly and compressor, and provide described second and four-way and described swabbing pressure zone between be communicated with, and in the process of described second operator scheme, make described second and four-way be communicated with described second pressure source is isolated.
5. compressor as claimed in claim 3, wherein, described second pressure source comprises the discharge pressure zone of compressor.
6. compressor as claimed in claim 5, wherein, described first scroll element comprises and the discharge passage of described discharge pressure regional connectivity and the five-way road that is communicated with described discharge passage and described valve assembly.
7. compressor as claimed in claim 6, wherein, when described second channel and described second pressure-source communication, described first piston is positioned at its second place.
8. compressor as claimed in claim 7, wherein, when described four-way and described second pressure-source communication, described second piston is positioned at its second place.
9. compressor as claimed in claim 6, wherein, when described second channel and described second pressure source were kept apart, described first piston was positioned at its primary importance.
10. compressor as claimed in claim 9, wherein, when the swabbing pressure regional connectivity of described second channel and compressor, described first piston is positioned at its primary importance.
11. compressor as claimed in claim 1 also comprises floating seal, described floating seal engages to form the 3rd chamber with described first scroll element.
12. compressor as claimed in claim 11, wherein, described first and second chambers axially are arranged between described the 3rd chamber and the chamber, described cave.
13. compressor as claimed in claim 11, wherein, described the 3rd chamber is communicated with described first and second chambers are isolated.
14. compressor as claimed in claim 1, wherein, each in described first and second pressure is the intermediate pressure between the operation pressure of the operation pressure in the swabbing pressure zone of compressor and described second pressure source.
15. compressor as claimed in claim 1, wherein, described first and second chambers are spaced apart from each other rotationally.
16. compressor as claimed in claim 1, wherein, described compressor output adjusting part comprises first biasing member and second biasing member, described first biasing member engages with described first piston so that described first piston is biased to its primary importance, and described second biasing member engages so that described second piston is biased to its primary importance with described second piston.
17. compressor as claimed in claim 16, wherein, when described first piston is positioned at its primary importance and described second piston and is positioned at its primary importance, the swabbing pressure regional connectivity of described first and second holes and compressor.
18. compressor as claimed in claim 1, wherein, described compressor output adjusting part comprises the steam injection system that is communicated with described first and third channel.
19. compressor as claimed in claim 18, wherein, when described first piston was positioned at its primary importance and described second piston and is positioned at its primary importance, described steam injection system was communicated with described first and second holes.
20. compressor as claimed in claim 1, wherein, described first piston can move axially between its primary importance and the second place, and described second piston can move axially between its first and second position.
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